package com.atguigu.gulimall.product.exception;

import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.HashMap;
import java.util.Map;

/**
 *
 * @author guanghaocheng
 * @version 1.0
 * 翼以尘雾之微补益山海,荧烛末光增辉日月
 * @date 2020/12/24 21:17
 */

//集中处理所有异常 ，有了这个异常处理类，我们就可以放心大胆的throw异常，并且可以进行异常的集中处理
@Slf4j
@ControllerAdvice(basePackages = "com.atguigu.gulimall.product.controller")
@ResponseBody
public class GulimallExceptionControllerAdvice {

    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handlerValidException(MethodArgumentNotValidException e){
        log.error("数据校验出现问题{}，异常类型{}",e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();
        Map<String,String> errMap = new HashMap<String,String>();
        bindingResult.getFieldErrors().forEach(item->{
            errMap.put(item.getField(),item.getDefaultMessage());
        });
        return R.error(BizCodeEnume.VALID_EXCEPTION.getCode(),BizCodeEnume.VALID_EXCEPTION.getMsg()).put("data",errMap);
    }

    //其他异常
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){

        return R.error(BizCodeEnume.UNKNOW_EXCEPTION.getCode(),BizCodeEnume.UNKNOW_EXCEPTION.getMsg());
    }
}
